Loom-shuttle.



s, H. HEABNE.

LOOM SHUTTLE.

APPLICATION FILED FEB. 20.1917.

Patented. May 7,1918.

29 3mm. Jig H fisar/v I a; earner {1T OSEJPH HENRY HEARNE, 0F SANFORD, NORTH CAROLINA, ASSIGNOR 0F ONE-HALF TO CLAWSON LEE WILLIAMS, 0F SANFORD, NORTH CAROLINA.-

LOOM-SHUTTLE Specification of Letters Patent.

Patented May 7, 191%.

Application filed February 20, 1917. Serial No. 149,744.

' To all whom it may concern Be it known that I, JOSEPH HENRY HEARNE, a citizen of the United States, residing at Sanford, in the county of Lee, State of North Carolina, have invented certainnew and useful Improvements in L0om- Shuttles, of whichthe following is a description, reference being had to the accompanying drawings, forming a part hereof.

The object of the invention is to provide an attachment, adapted to be handled as a separate article of manufacture for use in connection with loom shuttles of the standard type, and adapted to be applied to the shuttle either when the latter isnew or before its use, or after the shuttle has been used and by reason of the wearing of certain wooden parts of the body of the shuttle has become less elficient, to thereby restore the same to its original eficiency.

In the construction of shuttle which may be regarded as the standard type, inasmuch as it is the form most generally used, provision is made to prevent wear of the parts of the bobbin-latch by including a metallic abutment for contact with the head of the latch stem, so that the release of the bobbin by the proper operation of the latch when the bobbin spindle is sprung upward may be insured,-the previously encountered wear upon the wooden body of the shuttle,

resulting ultimately in the failure of the latch to properly release the bobbin is prevented. lln this usual or standard form of shuttle moreover the heel of the spindle head is adapted as the spindle springs back to its position inalinement with the shuttle body, to come in contact with a stop shoulder forming the terminal of a slot communicatingwith the cavity of the shuttle and the wearing of this shoulder which be ing formed in the body of the shuttle is of wood and. which wear is due to the impact of the heel of the spindle head, eventuates in permitting the bobbin spindle to swing downward beyond its proper position in alinement with the shuttle body, and the disadvantage of such excessive movement is that the thread on the bobbin is brought into contact with the wall of the cavity in the shuttle body and frequent breakages of the thread result.

Various means have been devised heretotore to correct one or the other of these evils and prolong the life of the shuttle by mainbe made either originally or after protracted use of the shuttle resulting, as indicated, in more or less injury due to the causes named.

Further objects and advantages of the invention will appear in the following description of a preferred embodiment, it being understood that changes in the form, proportion and minor details may be resorted to within the scope of the appended claim without departing from the spirit of the invention.

In the drawing,

Figure 1 is a perspective view of a portion of a shuttle showing the mounting of the spindle head therein and the operative arrangement of the attachment with reference thereto.

Fig. 2 is a similar view with the shuttle inverted to more clearly indicate the position of the attachment.

Fig. 3 is a longitudinal sectional view showing in full lines the normal or operative'position of the bobbin spindle and in dotted lines the displaced position which the spindle assumes when a bobbin is to be re moved or mounted thereon.

Fig. a is a detail view in perspective of the attachment showing in dotted lines the relative position of the spindle actuating spring.

Fig. 5 is a plan view of the blank from which the attachment is formed and which may be struck from a flat sheet or plate of metal or other suitable material of any de sired gage.

In disclosing the invention, the attachment is shown applied to a shuttle of the ordinary construction consisting of a-wooden body 10 having the usual metallic tip 11 and a cavity 12 communicating at the under side of the shuttle with a slot 13, said cavity housing the bobbin spindle 14 of which the head 15 is pivotally mounted in the body by means of a pin 16. The spindle head carries a bobbin-latch 17 of which the stem 18 is provided with a head 19 for contact with a metal abutment 20 of the usual staple form. Also the head of the spindle is provided with a toe 21 bearing upon a follower 22 forming the terminal of a spindle actuating spring 23 arranged in a spring socket 24, while the heel 25 of said spindle head is adapted either directly or through the terminal guide car 26 of the bobbin-latch, to contact-with a stop shoulder 27 forming the extremity of the slot 13 in the under side of the-shuttle body.

WVith this construction, as above indicated, the wearing of the wooden body of the shuttle by contact of the head of the latch stem is prevented by the metallic abutment staple 20, so that the proper operation of the bobbin latch in order to properly .releasevthe bobbin may be effected indefinitely. In order to prevent the wearing of the stop shoulder by the impact therewith ofthe heel of the spindle head, the attachment embodying the invention and shown in detail in Figs." 4 and 5 may be employed, said attachment being struck from a blank of flat sheet or plate material with ahead disk 28, a foot disk 29 and a connecting stem 30. Said head and foot disks are bent into substantially parallel planes extending in opposite directions from the extremities of the stem and as so formed the device can be inserted in the spring socket 24: of the ordinary loom shuttle without substantial modification of the latter so that the foot disk receives the pressure of the spindle actuating spring to preventwear at that point while the head disk which may, as shown, be of angular vform-rests upon the stop shoulder 27 to re- :ceive the impact of the heel of the bobbin spindle as the latter is snapped back to its position in alinement with the shuttle after having placed a bobbin thereon.

In some instances,,it has been founddesirable to form in the side wall of the spring socket a shallow groove 31, which may be formed without difficulty by means of a chisel, to receive thesteni of the attachment, thereby housing the latter andincidentally reinforcing it transversely, but obviously in the event of any injury to the attachment in the use of the device, another attachment can be applied without material loss of time and without requiring skilled labor.

' It willbe noted moreover that the .proposed mounting of the attachment is effected withoutin any way, obstructing or modifying'the form of the cut-away portion 32 of the body of the shuttle provided to atl'ord clearance for the toe of the spindle head.

Moreover if found desirable in practice to avoid the battering of the heel of the spindle head due to protracted use, the attachment or the head disk thereof may be made of a sufliciently soft material to absorb the wear, with the advantage of course that the attachment maybe replaced when necessary to preserve the efiiciency of the shuttle. such replacement being effected quickly and at a comparatively negligible expense.

Moreover a device of the type indicated may be constructed and shipped to the con sumer in flat form, thus economizing space. and when about to be inserted, the terminal disks may by means of pliers or other suit able tools be bent into the positions desired, the reduced width ofthe stem providing for effecting such adjustment with facility.

It should benoted also that as the stem of the attachment occupies a position in contact with the lower wall of the spring. socket. said wall isexposed through the open upper side of the shuttle cavity for the read manipulation of a chisel in forming the groove to house or countersink said stem.

In addition to the foregoing, it will be vnoted that as the bobbin spindle is swung from its normal or. alined position to the dotted line or discharging and receiving position indicated in Fig. 3, the pressure of the toe 21 upon the follower tends to force the lattertoward the lower wall of the spring socket, and the location of the stem of the attachment at the underside of thespring socket adaptsit to serve as a guide or wear element to prevent distorting the bore of the socket. and prevent the catching of the follower on any unevenness of such wall as might be caused by friction.

VVhat I claim is As an. article of manufacture, an attacl'lment for standard loom-shuttles, the same being struck; from flat pliable sheet metal and having terminal vdisks and a reduced soft, connecting stem one of said disks being adapted for arrangement inthe path, to receive the impact, of the heel of a bobbin spindle head, and the other disk being adapted for arrangement at the bottom of the socket for the spindle actuating spring, the, stem being bendablein opposite directions to position andspace the; disks.

- This specification signed and witnessed this seventeenth day of February A. D. 191?.

JOSEPH HENRY HEARNE.

- Copies of this patent-may be obtained for, five'cents each, by addressing the Commissioner of Patents. Washington, D. 0. 

